What is Fullscreen Activity in Android?

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Fullscreen Activity in Android is a type of activity that occupies the entire screen space and hides the status and navigation bars of the device. It is commonly used in applications that require a distraction-free user interface, such as video players, games, and photo viewers. By default, the Fullscreen Activity mode provides a black background to make the content stand out, but developers can customize the appearance by using different themes, styles, and color schemes. Users can exit the Fullscreen Activity mode by tapping the Back button, swiping from the edge of the screen, or using predefined gestures or buttons implemented by the app.